Broken Arrow Drainage Advisory Committee
Meeting of: 07/29/24
Title:
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Consideration, discussion, and possible action to recommend to City Council to reject expending funds to mitigate drainage concerns at 519 South Redwood Avenue (Case No. 24-009)
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Background:
This case was brought before the Drainage Advisory Committee on April 29, 2024, agenda item 24-565. The Committee voted 6-0 to recommend rejection of expenditure of funds. The applicant was not able to attend the previous meeting and has requested an opportunity to address the Committee. City Staff agreed with the applicant and is presenting the case again for the applicant to have the opportunity to speak on his behalf.
The proposed project at 519 S Redwood Ave, in the Union Station South subdivision, is to mitigate sink holes and a retaining wall in the Union Station South Subdivision.
Staff investigated the timber retaining wall in February 2024. It was noted that there is some erosion along the western bank of Olive Creek, but nothing out of the ordinary for this type of creek. It was also noted that a resident has two black corrugated pipes extending though the timber retaining wall. Below these pipes can be seen an area that has been washed out/eroded by the pipe discharge. This eroded area appears to be undermining the bottom of the retaining wall. The apparent undermining and high creek flows could cause soil to migrate away from the wall and surrounding areas. Also, the tunnels left by burrowing animals could provide a path for the water and potentially increase the amount of soil migration. All of this is a private property issue.
The estimated design cost to engineer a retaining wall is approximately $50,000.00 in 2024 Dollars.
Mitigating the sink holes and retaining wall does not have a public benefit. Therefore, staff is recommending to not expend funds for this project.
This area flows to Haikey Creek.
Cost: $0.00
Funding Source: 2018 GO Bond, Proposition 6
Reque...
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